* {
    margin: 0;
    padding: 0;
}

html, body {
	height: 100%;
}

body {
	font-family: "Helvetica Neue", Helvetica, "Microsoft YaHei", Arial, sans-serif;
	font-size: .875rem;
	font-weight: 400;
	line-height: 1.5;
	background-color: #fff;
	color: #333;
}

a {
	color: #333;
	text-decoration: none;
}
a:hover {
	color: #199583;
	text-decoration: none;
}

header,
footer {
	height: 3.75rem;
	line-height: 3.75rem;
	background-color: #199583;
	text-align: center;
	font-size: 1.5rem;
	color: #fff;
}
header ul {
	display: inline-block;
	list-style: none;
}
header ul li {
	display: block;
	float: left;
}
header ul li a {
	color: #fff !important;
	display: block;
	padding: 0 1.25rem;
	position: relative;
}
header ul li a:hover {
	background-color: rgba(255, 255, 255, .15);
}
header ul li a.active {
	background-color: rgba(255, 255, 255, .3);
}

section {
	width: 100%;
	height: calc(100% - 7.5rem);
	display: -ms-flexbox;
    display: flex;
    -webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;
	-webkit-align-items: center;
	-ms-flex-align: center; 
	align-items: center;
}

footer {
	background-color: #f1f1f1;
	color: #888;
	font-size: .75rem;
}